If c and d are odd positive integers, which of the following coul

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If c and d are odd positive integers, which of the following could be odd? Indicate all such expressions.

A、 c^d
B、 c^(d+1)
C、 (c+1)^(d+1)
D、 (c+d)^(c+d)
E、 (c^d)/(d^c)

答案：A,B,E

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